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不知道你是什么电动工具，UL745-1分Class A, Class E, Class B, Class F。其中Class A和Class E可以为given in the following examples。 1 q1 A# c+ A! b# M7 ]+ W" H
Examples of Class A material are:
! m+ d5 X3 Y# B# g– impregnated cotton, silk, artificial silk and paper;$ f1 a" i$ w$ A; p/ |- d
– enamels based on oleo- or polyamide resins.
- A6 F8 q/ B9 e+ o7 D. S: g8 n8 C$ Q T8 e/ e q- {5 o! z) [: w) L
Examples of Class E material are:
; ^7 K/ x. ]9 s w1 P' W! G: w4 B– moldings with cellulose fillers, cotton fabric laminates and paper laminates, bonded with melamineformaldehyde,, f7 V) D2 X* [3 @- P2 U! Y" H; j
phenol-formaldehyde or phenol-furfural resins;
/ P# o3 O6 \' l6 X, T– cross-linked polyester resins, cellulose triacetate film, polyethylene terephthalate films;4 Y) ^, P: Y7 d" D3 D, C
– varnished polyethylene terephthalate textile bonded with oil-modified alkyd resin varnish;/ }0 L, s' P% z0 |
– enamels based on polyvinyl formal, polyurethane or epoxy resins.- k) k# v0 `' Y4 Q' H/ I
+ {% P; D9 w4 h但是Class B and F Insulation System必须满足UL1446。
% k* a7 X2 A1 q如果没有UL1446认证，按Class E也只能做到90K。
+ [' p1 _& r! ?. U3 [; M$ Y; K5 X: ?8 @. Q; ^. y7 ~$ J
还有个例外就是：( E6 \: s( l8 p" C( U
For totally enclosed motors the temperature rise limits for Class A, Class E, and Class B may be increased by 5°C。( [0 F' a# f% f9 x5 S
! t: K5 i) `# W5 }& O3 I请对照确定是哪种绝缘等级。 |
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发表于 2011-9-9 08:35
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